A. Whenever any person driving a vehicle approaches a railroad crossing under any of the circumstances stated in this section, the driver of such vehicle shall stop within fifty feet (50') but not less than fifteen feet (15') from the nearest rails of such railroad, and shall not proceed until he can do so safely. The foregoing requirements shall apply when:
1. A clearly visible electric or mechanical signal device gives warning of the immediate approach of a railroad train.
2. A crossing gate is lowered or a human flagman gives or continues to give a signal of the approach or passage of a railroad train.
3. A railroad train approaching within approximately one thousand five hundred feet (1,500') of the highway crossing emits a signal audible from such distance and such railroad train by reason of its speed or nearness to such crossing, is an immediate hazard.
4. An approaching railroad train is plainly visible and is in hazardous proximity to such crossing.
B. No person shall drive any vehicle through, around or under any crossing gate or barrier at a railroad crossing while such gate or barrier is closed or is being opened or closed. (1960 Code, Sec, 7-1201)